Save my name, email, and website in this browser for the next time I comment remove in wp

Open your WordPress dashboard and navigate to the "Appearance" section. Select "Theme Editor" from the menu. Look for the "functions.php" file in the right-hand column and click on it. Paste the following code at the end of the "functions.php" file:

// Remove stored comment author, email, and website from cookies
function remove_comment_cookies() {
    setcookie('comment_author_' . COOKIEHASH, '', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
    setcookie('comment_author_email_' . COOKIEHASH, '', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
    setcookie('comment_author_url_' . COOKIEHASH, '', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
}
add_action('set_comment_cookies', 'remove_comment_cookies', 10, 0);

Finally, click the "Update File" button to save your changes.